Incubator-alarm.



P, S. MARTIN.

INCUBATOR ALARM,

APPLIGATION FILI-:n PEB. 17, 1909.

atented June 29, 1909.

2 SHEETS-SHEET 1.

Il) y y mue WW m a P. S. MARTIN.

ENGUBATOR ALARM. APPLICATION ULEB 32B.17,19o9.

Z SHEETS-SHEET 2.

PERRY S. MARTIN, Ol"

BROADWAY, VIRG IN IA.

INCUB ATCB-ALARM.

Specification of Letters Patent.

Patented June 29, 1909.

Applicationl led February 17, 1909. Serial No. 478,376.

To all whom it may concern:

Be it known that I, PERRY S. MARTIN, a citizen of the United States, residing at Broadway, in the county oi Rockingham and State of Virginia, have invented certain new and' useful Improvements' in Incubator- Alarms, of which the ldllowing is a specification.

This invention relates to thermostatic alarms and 'inoreparticularly to an alarm especially designed for use in connection with incubatore `ior notifying the attendant in case 'the temperatureotI the erro' compartment rises above or frills below a predetermined decree.

The object of the invention is to provide l,

an alarm including an energized circuit, the

terminals of which are connected with a pair of contact members arranged on opposite sides of the damper controlling lever andV actuated by the latter to make and `break the circuit and thereby sound the alarm.

A further object oi the invention is generally to improve this class of devices so as to increase their utility, durability, and cihciency.

For a full understanding of the inventionl and the merits thereof and also to acquire a knowledge of the details of construction and the means for effecting the result, reference is to be had to the following description and;

accompanying drawings, in which:

Figure 1 is a side elevation oi' an incubator constructed in accordance with my invention; Fig. 2 is a detail perspective view of the support carrying the movable contact arms; Fig. 3 is a transverse sectional view through the supporting clip of the contact arms.

Correspondmg and like parts are referred to in the followinfr description and indicated in all the views o the drawings by the same reference characters.

The improved thermostatic alarm forming the subject matter of the present invention, is principally designedA forattachment to incu eters, and by way of illustration is shown in connection with an incubator of the ordinaryvconstruction, in which 5 designates the frame, 6 the lamp and '7 the damper controls;

y mounted..A at 8 and operatively connected toa thermo-A ling lever, which latter is pivotal stat 9, of any approved construction.

The device com rises a vertical support 10 preferably secure to the top of the incubator near thelamp 6, and to one side of which is secured a ellp 11 having a strip 12 secured receiving l to the u per portion thereof and extending to a bin( ing screw 13. The clip 11 is preferably stamped or otherwise formed of a single sheet of metal bent into substantially T'- shape as best shown in Fig. 3 oi' the drawings. Pivotally connected at lfl with the central fin of theclip 11, are spaced arms 15 and 16 constituting contact members, said arms being disposed on opposite sides of the lever 7 and arranged to contact'thorewith to make and break thc circuit, as will be more fully explained hereinafter.`

Secured to the support 1() above the clip 11, is an overhanging bracket 17 having its free end formed with spaced pcrforations for .the reception oftlu'eaded members or bolts ,'18 `and 19, there being suitable clamping nuts 20' engaging the threaded ends of the bolts 18 and 19 and arranged to bear against the upper surface of the overhanging arm 17 for adjusting the contact arms 15 and 16 toward and from the dam er controlling lever. Attention is here calcd to the fact that the lower arm 16 is slightly longer than the upper arm 15 so as to permit free adjustment oi' said arms without interfering with each other.

Connected with the bindin screws 13 and 21 is an energized circuit-inc uding a signal bell 22 and battery 23, there being a switch 24 of any approved type inserted in the circuit between the binding screw 13 and signal 22 s o that the alarm can bc thrown out of circuit when desired. Connected with the binding screw 21 is the adjacent end of a conductor 24, the o posite end of which is connected with the lxelver 7 either at its ivot end or at any'other suitable oint in the .enGth of said lever. Thus it wil be seen that should the temperature in the egg receiving coinpartment rise above a predetermined degree,

the thermostatQ will actuate the lever 7 and move the latter into engagement with one of the contactsA 15 or 16 thereby closing the circuit through the battery and conductor 24 and sounding the alarm. Should the temperature fall below a predetermined sdegree, the lever 7 will be moved in the op osito direction and close .the circuit throng the `v `other contact-arm and also sound the al By rotating the nuts 20, the contact s 15 and 16 may be adjusted so as to extend or limit the throw of the lever 7 and thus cause the signal to sound at any desired tempera-- ture, the said contactarme beingA locked in adjusted positionby engage1ne11t,ottlie nutsv the, invention, what mg :1, e'gizf-/i ciimzi imi Y contacts iispsd on apposita sides 0f the continuing lever and itmecmd '5,0 the tai-mijnals of the energixed L act :Mms and mii'n 'hi'ough die biacke fo? adjusting said Contact arms with respfmt 1* se the ci iaigiimg lever. l

15 The combnaienwith anincubatorhav- 1W a wiper cn'rohmg iever, o? a support s ne insidiaor, d Contact "GH o l ineresys. Lorn# in, threfidd bows "ijf canna-ated with the :i1-ms ami .g mfigh the nel1m 25 'oraions iin die .living braak', and vmp3s engaging bhe ms and against the mia/ena fue 'f tix@ hiaie foi' mit, biacet, mid means -olom'nwiy Connected Wih the coni 'dun' m'mmg s. connection new/Teen the adjusting h@ arms: iaterziiy with respet io' ble damper coutrciliing leve?.

3. The Combination of an incubnzor hav ing a dampe coni-Toning lever, a s'i'pfffosft seem-sd to the incubaoi, a, clip cmi'ief 3 the support, spaced comme?, pim'a l-ounted on the dip, (img screws i to he Suppen; an eene? circuit izoinesteii vri-Uil the bin-ding scews and including im almn'l, a conductor Connecting' one of ghe binding screws with the dip, a second con* other binding screw and the dimif-r cof-f trailing lever, a bmfken carried by the' ,ID-up# port, threaded rods extending through. he bracket and operatively connected. with the clon'ac aims for adjusting the arms laterally with respect to the said iai/e1', `and mit@ engaging tile meaded @mis @f h@ rods simi `beasf-ng against the bracket.

m presencof two Witnesses.

TiN. 

